I don't know where you're going with this. It's a Windows tablet if it runs Windows. It's a Mac tablet if it runs OSX. It's an Amiga tablet if it runs AmigaOS. Or maybe you think it needs a 880k floppy drive to qualify?
Windows 7 now needs an emulation layer to run XP software. Is it still Windows? Double glazing, maybe.
My point is that you can't reduce the requirements for making something an 'Amiga' to being the capacity to run an emulator, as it means the term has lost its meaning.
A computing device is most strongly defined by its hardware and by the operating system that runs on top of it. Applications like UAE do not define a platform in a useful sense, as they're platform agnostic. Attaching a label of 'Amiga' to something does not automatically make it a better computing device, the label alone is meaningless.
Natively running AROS on it would make it an Amiga for me.
That's about as close as you could get to calling it an Amiga.